All requests to any 9Spokes API require a valid API key. API keys are 64-byte strings and should be attached to each request using the HTTP Authorization header.
Do not specify a scheme (such as basic or bearer) and do not base64-encode your key. Instead, use your API key directly in the Authorization header.
Authorization: 63TX2kPSahV...xk7MKge9ut
You must replace 63TX2kPSahV...xk7MKge9ut with your own API key.